take a look. frost on the wind shields, front back, grass, everywhere we looked and every car parked overnight, they have the frost. keep it in mind. and i have frost on my rear window, it's a good idea to defrost before backing out of a driveway. cool temperatures this morning and we are under the impression it will be colder heading up south the santa rosa area in that direction, north of here. in napa, some of the more protected valleys. so we're going to take a look at those in about an hour from now. right now i can tell you, it is below freezing in san rafael. this is redwood highway, highway 101 at lucas valley road. bundle up, i did and it's not that bad if you are prepared.